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The dimension of 1μ0∈0 is - Physics

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प्रश्न

The dimension of `1/(mu_0 ∈_0)` is

पर्याय

  • [LT-1]

  • [L2 T-2]

  • [L-1 T]

  • [L-2 T2]

MCQ

उत्तर

[L2 T-2]

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पाठ 5: Electromagnetic waves - Evaluation [पृष्ठ २८२]

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सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 12 TN Board
पाठ 5 Electromagnetic waves
Evaluation | Q I. 1. | पृष्ठ २८२

संबंधित प्रश्‍न

Draw a sketch of linearly polarized em waves propagating in the Z-direction. Indicate the directions of the oscillating electric and magnetic fields.


Give two uses of IR radiation.


Why are e.m. waves non-mechanical?


Let an electromagnetic wave propagate along the x-direction, the magnetic field oscillates at a frequency of 1010 Hz and has an amplitude of 10-5 T, acting along the y – direction. Then, compute the wavelength of the wave. Also write down the expression for the electric field in this case.


If a source is transmitting electromagnetic waves of frequency 8.2 × 106 Hz. then wavelength of electromagnetic waves transmitted from the source will be.


Which of the following are not electromagnetic waves?


If `vecE` and `vecB` represent electric and magnetic field vectors of the electromagnetic wave, the direction of propagation of the electromagnetic wave is along ______.


The source of electromagnetic waves can be a charge ______.

  1. moving with a constant velocity.
  2. moving in a circular orbit.
  3. at rest.
  4. falling in an electric field.

The electric field in a plane electromagnetic wave is given by `vecE = 200cos[((0.5 xx 10^3)/m)x - (1.5 xx 10^11 "rad"/s xx t)]V/mhatj`. If the wave falls normally on a perfectly reflecting surface having an area of 100 cm2. If the radiation pressure exerted by the E.M. wave on the surface during a 10-minute exposure is `x/10^9 N/m^2`. Find the value of x.


The electric field in an electromagnetic wave is given by E = 56.5 sin ω(t - x/c)Nc-1. Find the intensity of the wave if it is propagating along x-axis in the free space.

(Given ε0 = 8.85 × 10-12 C2 N-1 m-2)


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